Improvement in elastic rolls



@tutti (affita WILLrAM H. frownns, o F'BosroN, MASSACHUSETTS) Letters Patent No. 112,988, dated March 2,1, 1871.

IMPROVEMENT' IN. ELASTICy ROLL-S.1

The Schedule referred to these Letters Patent and m'akglng part of the same.

Be it known that I, vWILLIAM H. Town'ns, of Boston, county of Suffolk, State of Massachusetts, have made a new and useful Improvement in Elastic Rolls; and I hereby declare the following to be a full and exact description of the same, ,reference being had to. the accompanying drawing which forms part of this specification, iu'whioh-ff Figure l shows a longitudinal section of a rollmade' according to'my invention;

Figure 2 isa perspective view of the same Aand Figure. 3, a crosssection.

Heretofore there have been two serious difficulties in the manufacture ofelastc'rolls, such as used for clothcs-wringers and other similar-purposes. The rst arises from the difficulty of preventing the rollfrom turning on its shaft. the center of the roll, being composed of pulpy or Weak material, will tear when subject-ed to great stress, as in using the rolls. The other diiculty arises from the expense ot' making, compounding, andA vulcanizing the entire roll. This requires a careful making of the roll, and then subjecting in proper molds to the heat required for vulcanizing. By my improvement both these difficulties are overcome. Y

Y In a former patent, No. 104,514,'issued to me, and dated June 21, 1870,l I have described a roll made `by securing to a shaft brous material satul'ated'with water-proof substances.

My present invention consists in fibrous material coated with water-proof material wound around-a shaft,

vand covered with a shell of -vulcanizcd rubber.

The following description will enable any one to make and use my invention.

In the drawing- A is anordinary roller-shaft, which has spurs or burns, a a, the bnrrs being turned in opposite directions on different partsor rollers..

On this shaft is wound, bythe machine commonly used for that purpose, cloth, cotton drill,^duck, or other fabric water-px oofed, and coated with rubber tilll the body B of theroll is formed.

This AarisesA from the fact thatv D To prepare the cloth I water-proof it with any of the material ordinarily used for that purpose, and coat it on one side with rubber, so as to form what .is known as'friction-goods in the trade.

The. fabric lis wound tightly around the shaft, so

that the spurs a c come through until a sufficient vthickness' is formedl to bury them..- This willprevent all turning of the rollv en the shaft. The winding is.

lcontinued till the desired size is reached. The continnous sheet is then cnt off, and the end cemented to the rollwithrubber cement.

The ends of the roll are confined by the washers C C, in the usual manner. The roll is thendried,` and is iit'for use without` anything further. But I prefer to cover .the whole with a tube of vulcanizedrubber,

The roll thus formed is in appearance exactly like a. roll made wholly of rubber, and has the advantage that it will not break fromthe shaft or turn on it.

The portion B maybe formed, partly or wholly, of

other yielding material, and then cemented and covered with therubber shell D. But I prefer the fab.A ric prepared as beforev described, and wound tightly A around the shaft.

Having thus described myinvention,

- What l claim, a'nd desire to secure by Letters Patent is l. The improved roll herein described, composed of a-shaft, A, water-proof fabric or fibrous material, -B, and rubber shell or covering D, substantially as set forth.

2. The combination of shaftA, body B, of rubbercoated fabric, and washers O O, all substantially as described. I

In testimony whereof I have signed myname to this specification in the presence of two subscribing wit- DGSSGS.

WM. H. TOWERS. Witnesses:

SAM-n. P. JONES, Jr., JOHN URIAN. 

